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FastCAC MCP Server

answering

FastCAC is answering right now. Last checked 4 min ago. It exposes 49 tools.

Register a Nigerian business with CAC: name checks, fees, register search, TIN. Sign in when needed.

Uptime history 5 days of history
5 days agonow
100.0%
Uptime 24h
91 of 91 checks
49
Tools
read from the server
148 ms
Response time
average over 24h
open, no key
Access
streamable-http

What changed 11

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 4 November 2026. No other catalogue keeps this.

7 Nov a tool description was rewritten start_nin_request
5 Nov 2 tools appeared get_prices, list_nature_of_business
4 Nov 3 tool descriptions were rewritten5 times that day check_business_name_compliance, check_name_availability, search_cac_register
4 Nov 2 tools changed the parameters they ask for check_business_name_compliance, generate_business_names
4 Nov a tool appeared search_knowledge_base
and 2 more, back to 4 November 2026

Nothing serious here today

Today is the operative word: we check FastCAC every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 4 min ago.

run in your terminal
claude mcp add cac --transport http https://api.fastcac.com/mcp
Settings → Connectors → Add custom connector, then paste this address
https://api.fastcac.com/mcp
~/.codex/config.toml
[mcp_servers.cac]
url = "https://api.fastcac.com/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "cac": {
      "url": "https://api.fastcac.com/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "cac": {
      "type": "http",
      "url": "https://api.fastcac.com/mcp"
    }
  }
}

Available tools 49

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

request
request_credit_purchase
Show a Pay button for a credit pack (Agent subscribers). Use a pack_id from get_credits.
request_documents
Show an Upload button for a registration's documents (passport photo, NIN slip, signature, and a supporting document if CAC's name check asked for one). Without document_types it asks for every required document still missing or failed; name document_types to ask for specific ones again (e.g. CAC queried the passport photo). Files never pass through you; each verdict arrives as a system event.
request_nin
Show a secure NIN field for a business so the user can verify their identity. Their name, date of birth and gender are filled from it. The NIN is typed into that field, not into the conversation.
request_payment
Show a Pay button for a registration once its form is complete. The amount comes from FastCAC's pricing (less any discount code applied). You never see card details or the payment link; the outcome arrives as a system event.
request_subscription
Show a Start free trial button for the Agent subscription (for people registering businesses for clients). 14 days free, set up on Paystack.
request_whatsapp_verification
Show a Verify on WhatsApp button. Needed before starting a business or paying (create_business / request_payment return whatsapp_unverified).
business
check_business_name_compliance
CAC's verdict on a proposed name, the same check fastcac.com's name checker runs: CAC's naming rules first, then CAC's own compliance and similarity engine. Returns `tone` (ok, caveat = a certificate is needed, blocked), a plain `message`, `code` (CAC's 00-14; none when one of CAC's naming rules blocked it), `similar_names`/`most_similar_name`/`similarity_score`, and `alternatives`: names to offer, each already passing the rules (for a name missing its ending, the name with each accepted ending: Ventures, Enterprises, Services, Concepts, Hub, Fashion, Beauty, Biz, or Limited/Ltd for a company). `line_of_business` must be one of CAC's entries; anything else returns error line_of_business_invalid with `choices` to ask about, never a guess. A name ending in Limited/Ltd/PLC is checked as a company unless `name_type` says otherwise. An `error` is never a verdict: say CAC didn't answer.
create_business
Start a new registration: creates the business (as a draft) with the name the user wants to register, in the workspace they're in (pass `workspace` only when they ask for the other one). A personal registration needs a verified WhatsApp number: without one it returns whatsapp_unverified (request_whatsapp_verification sets it up).
delete_business
Delete one of their businesses that hasn't been paid for (draft or pending_payment) with its registration details and documents. If it can be deleted, a Confirm button is shown and nothing is deleted until they tap it; if not, you get the reason (e.g. it's been paid for). Call it only when they ask to delete it - not when they just ask whether they can.
cac
get_cac_documents
For an approved registration: show Download buttons for the CAC certificate and status report, once we have them.
get_cac_tax_id
Get the Tax ID (TIN) CAC's public search shows for a registered business. Takes company_id, rc_number and classification_id from a search_cac_register result. Returns { name, rc_number, tax_id }, or an error 'not_found' when CAC has none.
search_cac_register
Search the Corporate Affairs Commission's (CAC) public register for businesses already registered in Nigeria, by name or by RC/BN number. Returns `results`: name, rc_number (the BN number for a business name), registration_date, classification, nature_of_business, status (e.g. ACTIVE or INACTIVE), company_id, classification_id and match (exact, close, similar or null), best match first; RC/BN numbers ("RC 8911267") are read as numbers. Lead with the result whose match is exact; when none is, say plainly that nothing is registered under that exact name before listing the closest. This lists what exists; it isn't an availability check (check_name_availability and check_business_name_compliance are). An `error` never means there's no match.
share
create_share_link
Make a share link and show it as a Copy button. If one is already live, this replaces it (the old one stops working), so it shows a Confirm button first. review_enabled (status links) lets the viewer review the registration details.
list_share_links
A business's share links: the status link (anyone with it sees progress) and the details form link (the owner fills in their own details). Whether each is live, when it expires. Never the link itself.
set_share_review
Turn on or off the 'review the details' section on a business's live status link.
nin
fetch_nin_slip
Get their NIN slip for them from NIMC's record for their confirmed NIN, instead of them uploading a photo of it. Free to them. Only after they agree, and only once their NIN is confirmed. The slip is never shown to them.
get_nin_request_status
Where a request from start_nin_request stands: status (waiting_for_person, started, settling, verified, failed, expired, paid, delivered, delivery_failed), next_step in words, the products and their naira prices. Never the NIN or the person's details: those go only to the person.
notification
get_notification_preferences
How they get updates: in-app, email, WhatsApp, and WhatsApp tips and offers.
update_notification_preferences
Turn update channels on or off. Only pass the ones they asked to change.
registration
get_registration_state
Read where one of the user's registrations stands: status, stage, next action and action_path, which form sections are done, missing or invalid fields (names only), each document's status and what's wrong with it, payment status, whether their NIN is confirmed, and for a queried registration CAC's reason plus each flagged item with its fix_path and whether it's resolved. It never includes personal details (NIN, date of birth, phone, addresses); those are on the registration page.
update_registration_fields
Save registration form fields from what the user told you. Only these fields can be set: proposedOption1 (Proposed business name), lineOfBusiness (Line of business (exact CAC picklist entry)), proprietorPhonenumber (Phone number (digits only)), proprietorEmail (Email), proprietorState (State), proprietorLga (LGA), proprietorCity (City), proprietorStreetNumber (Street number), proprietorServiceAddress (Street name / address), proprietorPostcode (Postcode (digits only)), companyState (Company state), companyCity (Company city), companyStreetNumber (Company street number), companyAddress (Company street name / address), companyEmail (Company email). Returns what saved, anything invalid, and what's still missing.
action
get_action_status
Whether the person finished a step you handed them on FastCAC (a tool returned status 'action_required' with an action_id): confirming a change, paying, uploading documents, entering their NIN or verifying WhatsApp. Returns status (pending, started, completed, failed, cancelled, expired) and next_step in words.
annual
check_annual_returns
For a CAC business name: which annual returns are due from its registration date, which are overdue, CAC's estimated charge, and when the next one is due. Needs the registration date (it's on the certificate). Without it, the annual returns checker on fastcac.com looks the date up by BN number.
apply
apply_discount_code
Apply a discount code the user gives you to a registration that isn't paid yet.
businesses
list_my_businesses
List the signed-in user's businesses with each registration's stage, the next action, and action_path (the dashboard page for that action).
calculate
calculate_cac_fees
CAC's official registration fees, line by line, for a business name, a limited company (by authorised share capital, default ₦1,000,000) or an NGO (Incorporated Trustees). Use it for any question about what CAC charges to register. These are government fees, not FastCAC's price.
capabilities
get_capabilities
What they can do right now and why not: the workspace they're in and who they register for, the Agent subscription (status, renewal, days left), credits, WhatsApp, personal drafts, whether a registration can start in each workspace (and the tool that unblocks it), credit purchases, and features switched on for them.
credits
get_credits
Their credit balance, recent credit activity, Agent subscription status, and the credit packs they can buy (pack_id for request_credit_purchase).
discount
remove_discount_code
Remove the discount code from a registration that isn't paid yet.
generate
generate_business_names
Brainstorm CAC-registrable business names for an idea. Each name comes back already checked against CAC's registry, with `availability`: likely_available, similar_names_exist, or unchecked (CAC's search was busy).
knowledge
search_knowledge_base
Search FastCAC's knowledge base: the articles, policies, guides and how-tos FastCAC's team has written (pricing and what it includes, refunds, timelines, documents, what happens after payment, CAC rules and procedures, post-registration steps). Use it before answering a question about FastCAC's service or CAC process that the instructions above don't settle, and answer from the passages, not memory. Returns passages best first, each with its document title, heading, updated_at, a 0-1 rank score and a 0-1 similarity (how close in meaning; about 0.7 and up answers the question), plus total_matches and has_more. Weak or no results: try mode 'broad', reword the query, or page on with offset. If it still has nothing, say plainly that you don't have that information.
line
search_line_of_business
Find exact entries in CAC's line-of-business picklist matching what the business does.
manage
manage_subscription
Show a button to Paystack's page for changing their card or cancelling the subscription.
mark
mark_notifications_read
Mark all their notifications as read.
name
check_name_availability
Search CAC's public register for names matching or similar to a name, across every registration type (business names, companies, LLPs, trustees), ranked like fastcac.com's public search. CAC rejects a new name that's too close to any of them, active or inactive. `exact_match` is the registered name that is this name (case, spacing and the legal form like Ltd ignored), or null. close_matches come best first, each with `match` (exact, close, similar, or null when it only shares a distinctive word); a close match is often the same name with another ending (ADAEZE ENTERPRISES for "Adaeze Ventures"), which CAC treats as a clash. Lead with exact_match when there is one; when it's null, say nothing is registered under this exact name and lead with the closest matches as the clash they are. Any close match means the name is at risk; CAC makes the final call (check_business_name_compliance asks it). For an RC/BN number use search_cac_register instead.
nature
list_nature_of_business
Browse CAC's Nature of Business list: with no category, its categories (id, name, how many entries); with a category's id or name, every Specific Nature of Business entry under it. An entry is the line of business a registration uses, exactly as written.
notifications
list_notifications
Their recent notifications (unread only by default).
prices
get_prices
FastCAC's own current prices, live: business name registration (personal and agent workspace), the Agent Pro subscription, annual returns (CAC's fee and ours, per year), credit packs, the NIN tools and the developer API. Use it for any question about what FastCAC charges, every time, instead of a price from memory, a page or the knowledge base.
profile
update_profile
Change their account name (first and/or last name). Not a registration's proprietor name.
recheck
recheck_documents
Run the checks again on documents that are stuck (e.g. the check service was down, or the NIN slip is waiting on the passport photo). Not for a document that failed - that needs a new upload.
refresh
refresh_cac_status
Ask CAC now for the latest on a registration that's with them (submitted or queried). Changes arrive as system events too.
rename
rename_business
Rename a business (its display name; not allowed once CAC approved it).
revoke
revoke_share_link
Turn off a business's share link. Shows a Confirm button first.
show
show_share_link
Show a Copy button for a business's live share link.
start
start_nin_request
Start a paid request on fastcac.com for: 'slip' = the person's NIMC NIN slip (PDF and print-ready image), using their NIN; 'phone' = the person's NIN, found with the phone number they registered with NIMC (on fastcac.com they can add the slip; you can't request it here). Returns a link for the person and a request_handle for you. The person does a live face check and pays on fastcac.com (the prices are in get_nin_request_status's `products`, or get_prices); the result goes only to them. Starting is free and charges nothing.
subscription
get_subscription
Their Agent subscription: status (none, trialing, active, past_due...) and period end.
switch
switch_workspace
Switch the dashboard between their Personal workspace (their own businesses) and the Agent workspace (businesses they register for clients; needs the subscription).
use
use_nin_photo_for_passport
Use the photo from their confirmed NIN record as the passport photograph instead of uploading one. Only after they agree, and only once their NIN is confirmed.
whatsapp
remove_whatsapp
Remove their WhatsApp number. Shows a Confirm button first.

Endpoints

URLTransportStateLatencyChecked
https://api.fastcac.com/mcp streamable-http answering 137 ms 4 min ago

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FastCAC — questions

Answers built from our own checks of this server.

What can FastCAC do?
It exposes 49 tools, read directly from the server on our last check. Among them: apply_discount_code, calculate_cac_fees, check_annual_returns, check_business_name_compliance, check_name_availability, create_business and 43 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
What is FastCAC mostly used for?
Its tools cluster around request, share and cac. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.
Is FastCAC working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 148 ms. The bar chart above shows every period we have measured.
How do I connect FastCAC?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does FastCAC need an API key?
No. FastCAC completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 49 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is FastCAC?
It answers our handshake in 148 ms on average, which is faster than 82% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.